Abstract

This study addresses the importance of integrating the effect of land use on soil infiltration rate into land use change impact modeling. Based on a validated version 9.05.04 of the Water balance Simulation Model-WaSiM (statistical quality measures > 0.7), and field measurement of the infiltration rate under cropland and fallow, sixteen model simulations were performed. The impact of land use change is computed comparing LULC status of years 1990 and 2013. The effect of soil parameterization is computed using a refined soil map integrating land use change impact of soil infiltration rate and a classic soil map not considering this interaction. The results show differences in model results as an effect of soil parameterization approaches, indicating that the model is sensitive to the integration of LULC related effects on soil hydraulic conductivity. These differences are more pronounced with increasing modeling time steps (24 and 28 h). The signal-to-noise-ratio indicates that, results achieved in LULC impact assessment with a classic and a refined soil parameterization are very comparable except for interflow.

Published in

Proceedings of IAHS
2021, Volume: 384, pages: 275-281 Title: Proceedings of the International Association of Hydrological Sciences (PIAHS) Volume 384, 2021
ISBN: 9781713845034
Publisher: Copernicus GmbH

SLU Authors

• Hounkpatin, Ozias

  • Department of Soil and Environment, Swedish University of Agricultural Sciences
    
  • Hydro-Climate Services

UKÄ Subject classification

Environmental Sciences related to Agriculture and Land-use
Oceanography, Hydrology, Water Resources


Publication identifier

DOI: https://doi.org/10.5194/piahs-384-275-2021

Permanent link to this page (URI)

https://res.slu.se/id/publ/129778